Apparatus for mixing beverages.



B. E. SHATTUCK.

APPARATUS POB. MIXING BBVERAGES.

APPLIUATION FILED JAN. 13. 1911.

1,067,845, Patented July 22, 1913.

2 SHEETS-SHEET 1.

WIT/1:55525 l Wing@ 6 4 Wimyf? B. B. SH'ATTUCK. APPARATUS POR MIXING BEVBRAQES.

APPLICATION FILED JAN. 13, H111. 1,067,845, Patented July 22, 1913.

Z SHEETSWSIIEET Z.

Figi E- W1 TNEESES-' 2 z d 'fl/75 y /NVENTUR UNITED STATES PATENT OFFICE. l

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Snarfrucx, oF BOSTON, massacnusnrrs, ASSIGNOB., B Y ltlEfsIvn`v Assien- MENTS, To armaron P. wrnnmngs, on WEST UPmoN, MASSaCHUSETTS. y

Arrana'rus'ro Murine BEQvEnAGnS.'

Srecition 0f Letteslatsnt- Patented July 22, 1913. Application med January 1s, i911. serial mi. 602,449.l y

To all whom/15 may concern:

Be it known that I, BURT E. SH T'rUox, of Boston, in the county of Su olkv and State of Massachusetts, have inventedcertain new anduseful Improvements in Apparatus for Mixing Beverages, of which the following is a specification. The present invention relates to a mixing apparatus and has-for its main object to pro,- vid`e 'an automatic machine capable of thoroughly mixing liquids together, or of mixing airwith a somewhat viscous Huid, with perfectly homogeneous consistency, as in preparing beverages, beating egg batter, whipping cream, etc., without throwing the material'out of the container, and doing this in a sufficient-ly short time to warrant the use of the machine.

A secondary Objectis to provide a simple and com act portable apparatus, so arranged that the agitating or beating member may be lowered and raised to enter and withdraw from the glass, or other container for the liquid.

Still another object is to provide an electrical driving motor for such an apparatus, with means by which the motor is set in operation when the agitating member is .immersed in the container and stopped when the member is withdrawn.

In the accompanying drawings, I have.

illustrated an electrically driven mixing apparatus embodying the principles of my invention and exemplifying a mode of carrying the foregoing objects into practical effect.

Figure 1 represents a side elevation of the mixing apparatus showing a part thereof in longitudinal section. Fig. 2 is a sectional View of the post member of the apparatus on a plane at right angles to that at which the.

section of Fig.` 1 is taken. Fig. 3 is a sectional plan view showing the parts below the line -3-3 of Fig. 1. Fig. 4 is a fragmentary sectional view of the parts shown in l1g. 2,l

but representing them in their extended or raised position., Fig. 5 is an under plan view of the stirring or agit-ating member.

The same reference characters indicate the same parts in all the figures.

The apparatus o-r device 'comprises 'a driver 1 which is conveniently an electric .tainer may be readily tion of the telescopictube end of the inner mediate tube section 16, which is secured motor, a stirring or agitating member-2, a shaft 3 by which the latter is carried, and a support for the moto-r and agitator. The support conveniently consists of a telescopic post mounted upon a base plate 4, the latter being of such area and weight as to provide -a firmv foundation for the entire apparatus. The post compr1s`es`a foot piece 5 securedupon the base 4- by any suitable means such as a :bolt 6, a tube 7 attachedfto the foot piece 5 by screws 8, and an innert-ubc 9 secured at its'upper end to the arm or frame 10 which carries the motor. rlhis support or post so holds the stirrer that it may' extend down wardly into a glass 11 or other container for the liquid'to be agitated or beaten. The telescopic arrangement of the tubes T and 9 allows ythe stirring device tobe raised and held at such ax height that aV glass orv conslipped under the stirring device.' v Y Oneoff'the improvement-s in'which my invention consists' relates to `the construcor post, and the means by which extended condition of the post with the stirring device elevated Ais maintained. For this `purpose the inner tube is furnished with. friction and stopv members, in the form, preferably, of springs 12r which bear agninst the sides of a post or upright bar 1 which also issecured to 'the foot piece 5. On the top end of` the upright bar is secured a stop or abutment, consisting of a late orcap 14, and the sides ofthe bar at t e end next to the cap'are beveled to provide notches or inclined shoulders 15. When the motor and stir-rer are rais d and the post extended, the inwardly, bowed endsof the springs 12 enter the notches 1 5 and maintain the parts. in their elevated .and extended condition. The action of the springs is assisted byrlhe space between the tubes at the lower tube is filled by an interto the lower end of the tube 9, as shown in Fi s. 1 and 2. This section has an easy sli ing fit in the outer tube The weight of the motor being outside of, or eccentric to, the post causes a lateral thrust to be exerted between the intermediate tube section the Vcramping edect of the tube 9 in the tube `'l'.

16 and the outer tube 7, thereby producing a rictional pressure and tending to resist downward movement of the inner tube. The total rictional eect is such that when the springs are engaged in the notches 15 the telescopic post is held extended and the weight of the parts held thereby is not sufficient to shorten the post, but when an initial push, is applied sufficient to disengage the springs from the notches, gravity causes the motor and inner tube to descend slowly with an even gradual motion, until 'the inner tube cornes to 'rest on the toot piece 5. lt will be seen that the lower, which isvalso the relatively stationary, part ot the post is composed of two members, viz: the outer tubular member or tube 7 and the inner member or bar 13. rlhe upper and relatively movable part of the post, which is the tube 9, moves telescopically with respect to both these members, within the tube 7 and outside of the bar 13. They tube 9 with the bar 13, andirrespective of the outer tube 7, have all the characteristics and performall the functions of a telescopic post or support, and would serve that pose.- if the outer tube were omitted. uch .outer tube, however, serves the useful purpose of an additional guide for the relatively movable member, making the post,

when extended, more rigid than it would otherwise be', and gives a better finish and appearance than the ost would have if 'it were omitted. Consi ering the tube ,.9 und bar 13 as two members of an extensible post, the plate let is a stop at one end (the upper end) of one member, and the springs 12 are both friction devices and complemental stops at or near the respectively opposite en (the bottom end) ot theother member,-

which coperate with the rst-named stop to prevent separation of the members when they are extended. Another important teature of the invention is an improved means, positive and certain in'its .actiomtor causing the motor to be yset in operation when it descends suiiciently to immerse the agitator 2 in the contents of the container, and to cause the motor to stop when it and the agitator are raised. The currentmtor the motor is supplied from a conductor 17, one feed wire of which is connected directlyo one of the brushes of the motor, while thm other is interrupted. 'llhe interruption taires the form preferably of two separated strips 18 and 19, to cachot which one of the sections of the interruptor conductor is elec/ trically connected. These strips are insulated from each other by the gap between them, and by the fact that they are `secured to a piece 20 of insulating material. The circuit is comi leted by means of a plug 21 having an en arranged so as to enter lthe space between the contact pieces 18 and 19 and make Contact withpboth 'of these pieces.

Locaties rll`he plug is mounted upon a rod 22 which is contained slidinglyv in the *interiorV post or bar 13 previously mentioned, which is of some non-conducting or insulating material, such as wood or any'other material suitable for the purpose. 'llhe rod has a close sliding yfit or bearing in the upper part `of a longitudinal passage in the bar13, the extent of this bearing `being so greatthat there is no likelihood `of the rod being oleiiected to either side. 'llhe lower part ot the passage i-nthe bar 13 is enlarged and contains a spring 23 which bears'at the lower end on the foot piece 5 and exerts an up ward -Athrust on the rod 22 through the medium of an insulating block 24:.A The rod 22 has on itslower end an enlarged head the bore of the bar 13 to limit the amount ',by which the rod and plug may be projected, as shown in Fig. 4t. ity comparing Figs. 1 and 4: it will be seen that a considerable flatitude for motion of the. lug 21 and vits carrying bar 22 is permitte butfthat' motion is less than that of the inner tele scopic tube`9. As a consequence the plug follows the motor-carrying tramel() when 'the latter is raised or lowered a short dis-- tance, but is arrested and caused to break the circuit of the motor when the latter is raisedto the limit. rllhe plug is given this etlicient range ot movement to enable .the agitator to be moved up and down in the liquid on which it acts for the purpose of thoroughly stirring and mixing the same, but its movement-is so limited that the agitator is caused to cease rotating before Ait is raised to the limit ot its upward motion,

-and ordinarily before it rises above the rim v of the container 11.k This insurespositiveness in causing the motor to operate when the agitator is immersed in the liquid, and .causing it to stop when withdrawn, with-- 'out requiring a separate and specially malnipulated switch, and also insures that the agitator will cease rotating at a level sa-y 'ciently below the to of the container to .guard against throwing the liduid out of the container.

rll`he formation of the stirrer or agitator is another most important feature o f the' in vention. This agitator is a solidfdisk or head formed somewhat like a button, and \having grooves 27 on its underr'side. The funder side is convex and the notches extend /from the periphery downwardly and inwardly, until they vanish in the Hatunder surface of the disk. rlhe notches are inclind with respect to the radii ot the disk, being tangent to a circle nearly midway between the center and circumference of the disk. The inclination ot these notches with respect to the direction ot rotation of the disk is toward the axis, as shown in Fig. 3. 'llhat is, the agitatorturns'in the direction mensen' of the arrow, and the notches are inclined in such a way that the liquid which enters the notches and is acted upon by them is drawn inward, thus somewhat counteracting the centrifugal effect Idue to'therapid rotation of the agitator. The result' of the form and' of the'rapid rotation of the agitator is that the liquid is caused to rise at the sides of the container and is drawn down at the center, leaving an open space in the center extending down to the agitator, as indicated by dotted lines in Fig l. rlhe liquid is thrown into great agitation, being forced downward in, the center of the container, thrown out thence to the walls of the container, raised along the walls and drawn` down in the centrall vortex. Every particle of liquid is thi-is acted upon by the agitator. The apparatus is thus extremely ed'ective in producing a thorough mixture of ingredients. @ne of the uses for which the apparatus is most conspicuously adapted'is in the mixing of' egg drinks, for this agitator is able to break up the egg into minute particles and thoroughly disseminate the same among the other ingredientsv of the drink, without leaving undifused particles, lumps, or strings of the egg. v

rlhe agitator not only beats and breaks up vthe particles of the liquid on which it acts,

but it also draws in and distributes in the liquid a considerable amount of air. rlhereby it is especially well adapted for producing such frothy substances as are made by whipping or beating a somewhat viscous liquid, such as e g batter, cream, or the like. ln fact I have ound that the apparatus is remarkably eflicient' in beating eggs and whipping cream, and that after acting only a very few seconds on such substances, a frothsuliciently sti for any purpose, and of homogeneous consistency is produced.

ltshould be noted that the base plate 4 on which the supporting post for the apparatus is mounted, is preferably made of stone or other material having considerable weight, so that when the post is extended and the motor raised, the base itself will no-t be lifted from the table or counter on which it rests. rlhe area of the base is also extended far enough in all directions to give a stable support and to provide a space on which a glass or other container may be placed. Such a container is held in a central position with respect to the agitator by a clip 28 having curved arms to embrace the container and otherwise so made as to surround and be adjustably clamped to the post. A clamping bolt 29 with a screw 80 is provided for that purpose. When the telescopic post is extended the springs 12 are arrested by the cap 14, which provides an abutment preventing withdrawal of the inner tube, the springs and cap thus being complemental stops on the members of the post for preventing separation of the members when extended. The operator therefore, when lifting the agitator from the container need take no care to avoid lifting it so high as to separate the parts of the post, because such an accident cannot by any possibility occur.

t. A mixing apparatus comprising a base,- a telescopic post rising from vsaid base, a holder mounted uponpthe upper end 4of the post, a shaft projecting downward from said holder, means for rotating the shaft, an agitator on the end of the shaft, and means carried by one member of the telescopic post for retaining the same in -its extended oondition.

2. A mixing apparatus comprising a base, a post rising fro-ni said base and consisting of members, one of which slides telescopically relatively to the other, a friction device carried by one of the members engaging the other, a stop engageable by such friction device fo-r preventing separat-ion of the members, an arm carried by the movable member of the post, a rotary shaft extendving downwardly from the arm, driving meansfor such shaft, and an agitato-r on the lower end of theshaft.

3. 'A mixing apparatus coinprising a base, a post or bar risin from said base, a tube surrounding said ar, springs secured lto said tube and bearing resiliently against the bar, the bar having notches in its upper part adapted to be entered by the ends of the springs when the tube is raised, whereby the latter is'held in raised position, and prevented from passing from the bar, an arm projecting from the tube, a shaft carried by said arm and extending downwardly, means forrotating the shaft, and an agitator cary ried on the lower end of the shaft.

4, A mixing apparatus, comprising a base, a telescopic post rising from said base, an arm projecting laterally from the upperend of said telescopic post, a motor carri'ed by said arm, a shaft projecting downwardly from said motor parallel to the post, an agitator carried by the lower end of the shaft, adapted to be inserted in a container by downward movement permitted by the telescopic post, and means for retaining the telescopic post in extended condition vand preventing separation of the members thereof.

5. In an apparatus of the character described, a telescopio post, including two members engaged together with capability of endwise movement, a switch plug. mounted in one of said members and movable longitudinally thereof, a spring tending to move the plug in the direction of elongation of the post, and a stop arranged to` limit the movement of the plug to an extent less than that of the elongatin-g movement of the post.

lll() K] es 6. A mixing apparatus comprising a motor, a. shaft connected to and rotated by the motor, an agitating member mounted u on the shaft, a holder for the motor, a supporting post by which said holder is supported and With respect to which it is movable vertically, a vertically movable svvitch plug mounted in said supporting post, separated contact members in the motor circuit, carried by the motor-holder in line vvith the plug, whereby the plug is adapted to bridge the break between said contact members When the motor and its holder are lovvered, yielding means tending to raise the plug, whereby it follows and remains in contact with said members during a part of the up- Ward movement of the motor-holder, and a positive stop for arresting the plug betere the upward limit of movement ot the motorholder, whereby the circuit ot the motor is broken when the motor is raised.

7. A mixing apparatus comprising an eX- tensible supporting post including in its construct-ion a plurality ot members, one of which is movable endvvise relatively to the other, a shaft and means :tor driving said shat't mounted upon one oi" said members, an agitator implement secured to said shaft, a stop mounted near one end of one of said members, and a complemental stop mounted en the other member near its respectively opposite end in position to engage the lirstnamed stop `when a post is extended, Xto prevent separation of the members.

8. A mixing apparatus comprising in combination an upright extensible post, consisting ott members one oi which is movable and down with respect to the other, a miner carried by said movable member, and complemental sto-ps on said members arranged to engage one another when 'the movable member is raised, to prevent separation of the members.

9. A. mixing apparatus including in its combination a mixing implement and means igor driving said implement, a support for said implement and its driving means including members interengaged and relatively movable for extension and contraction, a friction device carried by one mein,- ber yieldingly engaging another member of said support and said other member having a shoulder located Where it may be engaged by said friction device whenv the members are relatively extended, and forming a non-Y positive lock `for cooperation with said strictiondevice in holding said members in entended position and adapted to be unlocked by application of external torce.

l0. A mixing apparatus comprising a beffe, a post rising from said base and consisting of members movable endvvise relatively to one another, and a spring carried by one of said members bearing resiliently against another of said members, thereby ineaeae constituting a friction device for yieldingly retarding the relative movement oit said members, and a stop mounted upon said. other member in position to be engaged by said spring to prevent complete separat-ion of the membersa ll. A mixing apparatus comprising a base, a post rising from said base and consisting ot members movable endvvise relaf tively to one another, and a spring carried by one of said members bearing resiliently against another of said members, thereby constituting a 'friction device for yieldingly retarding the relative movement of said members, and said other member having a -notch adapted 'to be entered by said spring lmember in position to malte contact said terminals when the movable post meinber isin one location, and positive vmeans for disconnecting said switch member from said terminals vvhen the movable post member is in another location.

i3. A mixing apparatus comprising 'composite post consisting of a stationary upright bar, a relatively movable member arranged to move endv/fise with respect to said K bar, an electric driving motor mounted upon said relatively movable member, an agitator i a eimplement connected Yviv th said driving motor, separated terminals or Contact members in the circuit of said motor mounted upon said movable member, a switch xydevice mounted upon said stationary bar in position to engage said terminals when the movable member is lovvered, a spring arranged to cause said switch to tollov the movement of the terminals during a portion of the rising movement of said movable member, and positive .means tor separating said switch device from said terminals at a point in the travel ot theA movable member intermediate the limits of such travel,

Vllln an apparatus oit the character de'- scribed an extensible post consisting oi' tvvo members, one of which is relatively movable with respect to the other, separated terminals or contact members connected with the parts of an electric circuit mounted upon one oi" said members, a switch device mounted upon the other oit said members adapted to en agesaid terminalswhen the relatively In testimony whereof I have ailixedmy mova le members are in one position, means signature, inpresence of two Witnesses. tending to move said switch device in the directio-n of relative movement of said mem- BURT E. SHATTUCK. bers, and -positive means forV arresting said switch device at a Point short of the extent Witnesses:

of the extreme limit of such relative move- A. H. BROWN,

ment. P. W. PEzzE'rrI. 

